ASTROSAT CZTI

Data Quality Report

Orbit 35686

Creation date: 2022-09-12T17:29:32.832433
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_029T03_9000005108_35686cztM0_level2.evt modeM0/AS1A09_029T03_9000005108_35686cztM0_level2_quad_clean.evt
Size (bytes)426,067,20067,049,280
Size406.3 MB 63.9 MB
Events in quadrant A2,567,917437,520
Events in quadrant B3,620,871432,355
Events in quadrant C2,920,468415,040
Events in quadrant D3,449,242389,272

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108111
B0139861
C0117341
D0136811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507440.078833%
B50743546.976744%
C50741112.187623%
D50742555.025621%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7197 5075 0 0 0.00% 0.00%
B 7197 5075 259 259 3.60% 5.10%
C 7197 5075 101 101 1.40% 1.99%
D 7197 5075 261 261 3.63% 5.14%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 124784 1016.74 608 598 122.1
A 15 169 50620 409.54 608 598 122.1
A 13 6 18827 149.25 608 598 122.1
B 5 172 907576 8094.35 589 574 112.1
B 5 255 314565 2802.15 589 574 112.1
B 5 31 26305 229.63 589 574 112.1
C 0 10 281863 2114.75 572 578 133.0
C 15 214 211864 1588.48 572 578 133.0
C 9 187 161674 1211.15 572 578 133.0
D 7 223 375797 2756.29 563 549 136.1
D 10 118 330454 2423.24 563 549 136.1
D 12 128 266680 1954.8 563 549 136.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter